This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
If you bear in mind that Ruby is a language and RoR is a framework based on that language it makes perfect sense. It's the same thing for every programming language. You'll get the compiler or interpreter and that's it. But you won't get farther than the basic "Hello World" app with it. You will need libraries and tools.